I play as Medic and I love the Sweeper
I'm medic level 8 now so looking forward to seeing what the gun at level 10 is like.
I agree with you on the Support class, I tend to run out of ammo a lot playing as a medic as I can heal myself and I tend to run out of ammo before I die. My one friend always plays as Support so when he is online I always join his group!